Haier appears to have developed a truly wireless large-screen TV. Despite its rather uninspired "completely wireless TV" moniker, the huge 55-inch prototype is a sight to behold in use without any cables dangling behind the panel.
To ditch the wires, the Chinese brand is employing Wireless Home Digital Interface (WHDI) technology to stream content, and magnetic resonance to power the TV. Sony demonstrated a similar concept way back in 2009, albeit with a much smaller 22-incher.
There are drawbacks to using magnetic resonance technology, which provides limited power output and requires a dedicated receiver and transmitter. These components are not only bulky, it's also unclear if they need power cords of their own, which would defeat the whole purpose of using this wireless tech.